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September Weather in Evergreen, United States

Last updated: June 24, 2025

In Evergreen, United States during the month of September, the average temperature hovers around 26°C (78°F). However, be prepared for a temperature range that can swing from a cool 12°C (55°F) to a sweltering 39°C (102°F). Expect around 112 mm (4.4 in) of precipitation spread over 11 days, contributing to an average humidity of 79%.

September Temperature in Evergreen

In September in Evergreen, the average temperature is 26°C (78°F), with maximums reaching 39°C (102°F) and minimums dropping to as low as 12°C (55°F). It's a great time for travelers to experience warm weather with occasional cooler evenings, making it ideal for outdoor activities and exploration.

September Weather in Evergreen: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Evergreen, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Evergreen, September typically has an average temperature of 26°C (78°F), with highs reaching up to 39°C (102°F) and lows dropping to around 12°C (55°F).
JanFebMarAprMayJunJulAugSepOctNovDec515762667479818178715754
Data source: Temperature data for Evergreen generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Evergreen

In Evergreen in September, the precipitation amount is 112 mm (4.4 in) that occurs over the course of 11 days.

September Precipitation Trends in Evergreen

The chart displays monthly precipitation patterns in Evergreen, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Evergreen, September typically receives around 112 mm (4.4 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec1051131051161181601381371129465142
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Evergreen

In Evergreen in September, humidity is 79%. With an average temperature of 26°C (78°F), this humidity feels like a tropical blanket enveloping you, making outdoor activities less comfortable for traveling.

September Average Humidity in Evergreen

This chart illustrates the average monthly humidity levels in Evergreen, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Evergreen is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec83%82%79%77%74%70%78%78%79%74%83%86%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Evergreen

In Evergreen in September, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Evergreen.

Maximum UV Index Levels in Evergreen for September

The chart shows the monthly maximum UV Index (UVI) for Evergreen in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Evergreen typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec579111111111110864
Data source: Evergreen September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How September Weather in Evergreen Compares to Other Months

Weather in Evergreen varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Evergreen, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Evergreen, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather10°C (51°F)105 mm (4.1 inches)83%moderate
February Weather14°C (57°F)113 mm (4.4 inches)82%high
March Weather17°C (62°F)105 mm (4.1 inches)79%very high
April Weather19°C (66°F)116 mm (4.5 inches)77%extreme
May Weather24°C (75°F)118 mm (4.7 inches)74%extreme
June Weather26°C (79°F)160 mm (6.3 inches)70%extreme
July Weather27°C (81°F)138 mm (5.4 inches)78%extreme
August Weather27°C (81°F)136 mm (5.4 inches)78%extreme
September Weather26°C (78°F)112 mm (4.4 inches)79%very high
October Weather22°C (71°F)94 mm (3.7 inches)74%very high
November Weather14°C (58°F)65 mm (2.5 inches)83%high
December Weather12°C (54°F)142 mm (5.6 inches)86%moderate

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